What coin is that?
The obol was a form of ancient Greek currency and weight. Obols were used from early times. In Classical Athens, obols were traded as silver coins. Three obols was a standard rate for prostitutes.
Answers by country
What was the Russian beard token used for?
proof of tax payment
money in Vostok Antarctic Station
Bolshevik's propaganda symbol
Which currency was the first to be converted to the decimal system?
British pound sterling
Frank of revolutionary France